Prosecutors decline to charge San Rafael man arrested in rape inquiry

A 36-year-old San Rafael man arrested on rape allegations will not be charged, a county prosecutor said Friday.

Lucas Baudilio Santos was arrested Thursday after an investigation by the San Rafael Police Department. His accuser, a 17-year-old acquaintance, told police she was raped over a period of about six months and her attacker threatened to harm her if she told anyone.

Santos was booked into the county jail while prosecutors reviewed the case.

On Friday, prosecutors declined to file charges because there was insufficient evidence to prove the case beyond a reasonable doubt, said Chief Deputy District Attorney Barry Borden.

Santos remains in custody until a no-bail federal immigration hold is resolved.